Method of separating axle-couplings.



METHOD or SEPARATING AXLE COUPLINGS. APPLICATION FILED JULY 6, 1909.

. Patented June 14, 1910.

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.these difliculties are entirely overcome and I STAS BAGSTER ROADSSEABROOK, OF LOS ANG-ELES. CALIFORNIA.

METHOD OF SEPARATING AXLE-COUPLINGS.

To all whom it may concern:

Be it known that I, BAGSTER ROADS SEA- BROOK, a subject of the King ofEngland, residing at Los Angeles, in the county of Los Angeles and Stateof California, have invented a new and useful Method of SeparatingAxle-Couplings, of which the follow ing is a. specification.

This invention relates to a method of separating axle couplings, and isof especial value in separating the couplings of diflerential axles ofwhich a former patent of mine No. 910,424 of January 19, 1909, is atype. In such type of axles the parts are telescopically united byfriction between the the parts in union having a press fit and havingbeen forced together by great pressure. The methods heretofore lmown ofseparating such axle couplings have consisted of applying force inopposite directions against external flanges on the coupling by any ofthe devices well known in machine shop practice, but such methods wereimpracticable owing to the difficulty of keeping the separating means inengage ment with the flanges, the size of which in a device of thischaracter must be small. The difi'iculty lay, not in procuringsuflicient power, but. 1n applying such power to the parts to beseparated. This difliculty was increased on account of the shape andcompact relation of the parts. With my method a perfect application ofpower is secured so that in the construction of the coupling the partsmay have even greater retaining friction between them, it not now beingnecessary to consider the question of separation so far as tight fit isconcerned.

In axles of the type mentioned there is a chamber or space between theparts to be separated, which chamber is sealed and of fixed dimensions,and my method of separation consists of introducing a fluid into thechamber between the parts under a pressure suflicient to overcome thegreat friction between the parts and move them out of engagement witheach other. The friction is overcome partly by main force of the pressure tending to separate the parts and also by reducing the friction byreason of the ex- Specification of Letters Iatent. Patented June 14,191() Application filed July 6, 1909.

Serial No. 506,230.

pansion of the outer sleeve due to the high pressure of the internalfluid.

In the accompanying drawings, Figure 1 is a sectional view through theaxle coupling. Fig. 2 is a sectional view on a reduced scale through thecoupling and shows the attachment of the pressure introducing means.

The inner collar 1 is frictionally nested in the outer collar 2. Onemember 3 of the axle is revoluble in the inner collar 1, while the otheraxle member 4 is rigid in the outer sleeve 2 and rotates therewith andwith the inner collar 1. The separation of the outer collar 2 from theinner collar 1 is to be effected. This will obviously uncouple the twomembers of the axle.

5 is a space or chamber within the inner collar 1 and within the outercollar 2. This chamber is sealed at the outer end of the collar 1 by theclose fitting ring 7. The ring 8 has rifle grooves 9 so that the space 5is not divided. The space or chamber 5 is obviously closed at the endopposite the ring 7 by the member 4 fitting tightly in collar 2 and bycollar 2 fitting tightly on collar 1. Passages 11 are employed for theintroduction of lubricant and after the same has been introduced theyare plugged up with disks and steel cement.

By connecting pipe 10 with one of the passages 11 at the shoulder 2,which communioates with the space between the two ends of the axlemembers, hydraulic pressure is applied therethrough of a minimum totalof seventy five tons for an eight inch coupling, which pressure entersthe chamber 5 and distends the outer collar 2, thus lessening thefriction between collars 1 and 2, and at the same time acting againstthe inner shoulder 2 and retaining collar 3" forces the axle member 3,collar 3, and sleeve 1, out of the sleeve 2. The pressure required toseparate them will obviously depend upon the amount of friction betweenthe parts and hence the pressure above named is subject to variation.Sometimes the pressure required to separate the parts is so great thatit leaks past the'ring 7. In such cases a split collar 12 is applied tothe sleeve 1, and a split collar 13 is applied to the axle member 3, anda lead acking 14 is squeezed into the corner of t e bearing tion anddisplacing the inner part by conbetween axle member 3 and sleeve 1 bytighttinuing the lntroduction of flu1d. ening' bolts 15 which draws thesplit sleeve In testimony whereof, I have hereunto set 5 13 toward thesleeve 12 and tightly commy hand at Los Angeles, California, thispresses the llead BJIOUfiId tlhie crack, thus ef- 19th day of June-1909.

ectuall sea in it an ho ing the ressure.

WhatyI c1ahis: P BAGSTER ROADS SEABROOK. The method of separatingfrictionally In presence of- 10 nested parts which consists ofdistending G. T. HACKLEY,

the outer part by the introduction of fluid FRANK L.-A. GRAHAM.

under pressure and thus reducing the fric-

